Hose-pipe coupling.



J. O. HOOPER & A. W. BRATT.

HOSE PIPE COUPLING.

APPLIOAT'ION FILED DEC, 5, 1908.

Patented Ju fie 29, 1909.

UNITED STATESJPATENT OFFICE.

JOHN C. HOOPER AND ARTHUR W. BRATT, OF BRUNSWICK, MARYLAND, ASSIGNORS OF ONE THIRD TO ANDREW KNELL, JR, OF BALTIMORE, MARYLAND.

HOSE-PIPE COUPLING.

Application filed December 5, 1908.

' To all whom it may concern:

Be it known that we, JOHN C. Hoorna and ARTHUR W. BRATT, citizens of the United States, both residing-at Brunswick, in the county of Frederick and State of Maryland, have invented certain new and useful Improvements in Hose-Pipe Couplings, of which the following is a specification.

This invention contemplates certain new and useful improvements in fluid ressure brake systems, and relates particu arly to improved safety appliances for train pipe cou lings;

0 those versed inthe art to which this in vention appertains, it is well known that injury as a consequence, owing to the fact that they, are thereby split and rendered .liable to-leak.

a The primary objectof the present invention is to avoid the contingency above mentioned' by the provision of safety means rendering it impossible to shut off the angle cocks without at the same time, disconnecting thehose couplers. And a further object of the invention is an improved means for venting the train pipe prior to the disconnecting of the couplers so as to effect an application of the brakes before the hose coupers are disconnected, w ereby the operation of disconnecting the cou. lers is rendered safe .and the accidents which have frequently occurred by the disconnecting of hose couplers with'the train pi e at standard pressure, effectually avoided With these and other objects in view as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements, and combinations of the parts that we shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings in which:

Figure 1 is a side elevation with parts in' Specification of Letters Patent.

his manifest y stretches the Patented June 29, 1909.

Serial No. 466,132.

3 is an enlarged sectional view thereofythe section being taken on the line 33 of Fig. 2; Fig. 4 is a side elevation of our improved hose-pipe-couplers, a part being shown in section; Fig. 5 is a horizontal sectional view through a portion of the coupler; and, Fig. 6 is a detail view of the plug valve for the cou ler shown partly in section.

orresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings, by the same reference characters.

Referring to the drawings, the letter A designates our im roved construction of angle cock, which is formed with the usual hexagonal attaching nipple 1, interiorly threaded as shown, and which is also formed with the obliquely disposed case or barrel 2 which communicates with the interior of the nip le 1 and preferably contains abrass or siini a1- bushing 3, the said valve case 2, and bushing 3 being tapered as clearly illustrated in the drawing. I

4 desi nates the plug of the angle cock which is 10ll0W as shown, containing a longitudinally extending opening 5 and one or more ports 6 designed to control the communication between the interior of the nipple 1 and the interior of the plug. The plug 4 is tapered so as to accurately fit the interior of the bushing 3, and is provided at one end with a threaded stem 7 on which a nut 8 screws. An expansion spring 9 is coiled around said stem and presses against the nut and the adjacent end of the bushing 3, so as to have a tendency to securely hold the plug 4 to its seat withinthe bushing 3. Preferably a cap 10 is screwed or otherwise secured to the upper end of the case 2 so as to inclose the stem 7, nut 8 and spring 9 to prevent them from being interfered with by dirt or the like. Between the lower endof the case 2 and thecorrespondin shoulder portion 4: of the plug, we preferab y provide a gasket or packing 11. The shoulder portion 4 of the plug is preferably of hexagon or similar sha e, so that'a tool may be conveniently appiied thereto to turn the plug, although it is to be understood the plug may be turned by the trainmans hands directl applied to the lower projecting end of the p ug or to the hose pipe 12 which is screwed thereon, the lower end of the plug being interiorly threaded to receive a union or the like so as to secure From this preceding portion of 'the specification, in connection with the accompanying drawings, it is evident that in the operation of our improved hose pi e coupling and angle cock, the operation oi turning the plug 4 to close the cock will be accompanied necessarily by a twistin movement of the hose pipe with the resut that as the cocks are closed against the passage of air, the hose pipe couplings are thus automatically disconnected from each other. Hence, with our construction ofapparatus, it will be impossible for the trainmen to close the angle cock without disconnecting the hose pipe couplers, the splitting and consequent injury to t thereby effectually prevented.

In addition to the above described construction and arrangement of parts, our in-' vention embodies as set forth in the specification, simple, durable and efiicient means whereby the train pipe may be properly vented before closing the angle cocks and disconnecting the hose pipe couplers. This portion of the invention we shall now describe.

Referring particularly to Fig. 1, the letter B designates one of our improved hose pipe couplers which may be rovided with any of the conventional or desired forms of jaws 13 and shank 14, the latter being intended for connection With the hose pipe in the usual manner. In the present embodiment of the invention the hose connection or shank 14 is set off or separated from the jaw portion, andv between the two the said coupler embodies a valve casing 15 preferably bushed as indicated at 16 and formed with a lateral vent 17 leading to the atmosphere. A plug valve 18 is mounted in the casing 15 to turn therein about its longitudinal arms. The said. plug is formed with a straight way opening 19, and with a vent groove or opening 20. The said 'valve may also be formed with a leakage groove 21,and it has a handle 22 so that it may be easily turned. In the normally connected position of the parts, the plug 18'is turned to provide a straightway passage through the coupler.' l/Vhenever it is desired to disconnect the couplers, the'said valve is so turned that air may pass through the orts 19 and port 20 throng the port 17 to iihe atmos here and thereby vent the train ipe be ore the couplers are disconnected It will thus be seen that we have here provided an additionalmeans of safety, which Will'prevent, if properly used, those occurrences which have resulted sometimes in serious injuries to the trainmen, when attempting to uncouple the hose pipes with the train pipes at standard pressure thereby securing an emergency ap 'lication of the.

. brakes and receiving the fu 1 force of air into e hose pipes, as before set forth being the flexible hose pipe and the relatively heavy metal couplers on the free ends thereof.

Preferably as illustrated in Fig. 2, the plug 4 is formed with a lug 4? working in a slot 2 in the lower end of the casing 2, so as to limit the movement of the lug in either direction. Havin thus 'descri ed the invention, what is claimec as new is:

1. An angle cock, embodying a casing and a plug mounted to turn therein, said plug be. ing arranged for the connection of a rose pipe thereto.

2. An angle cock, embodying a casing, and,

and angle cock casings in which said p ugs are mounted to turn. about their longitudinal axes, the plugs controlling the passage of .fluid pressure through the hose pipes.

4. An angle cock, comprising a nip le, a casing connected therewith and oblique y'disposed thereto, a plug mounted to turn in said casing, the plug controlling the passage of air throu h the casing, and the projecting end of the p ug being formed for the attachment of a hose pipe thereto. 7

5. An angle cock, embodying a body portion comprising a nipple, and a tapered casing, a tapered plug'mounted in said .casin and arranged. to control the passage of fluir pressure through the body portion, the plug eing formed with a threaded stem, a nut screwing on said stem, asprin encirclin said stem and'bearin against the nut and against the body portion, and a cap screwed to said body portion and inclosing the nut and spring and stem, the plug being formed at one end for the attachment of a hose pipe thereto.

and controlling the opening throu h the casing, the valve being arranged for t e connection'of a hose pipe thereto and being adapted.

for actuation 1n the operation of'opening the train line by 'pipe and upon the turning movement of the hose pipe in a direction to disconnect the coupler thereon-j In testimony whereof we tures in presence of two witnesses.

- JOHN C. HOOPER. [L.s.'] ARTHUR W. BRATT. [L.S.] W1tnesses: I

W. J. CoRBET'r, CHAS. finGnneonr.

our signa- 

